CN102573226A - Controller for grid-connected generating wind solar complementary street lamp system - Google Patents
Controller for grid-connected generating wind solar complementary street lamp system Download PDFInfo
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- CN102573226A CN102573226A CN2011104419383A CN201110441938A CN102573226A CN 102573226 A CN102573226 A CN 102573226A CN 2011104419383 A CN2011104419383 A CN 2011104419383A CN 201110441938 A CN201110441938 A CN 201110441938A CN 102573226 A CN102573226 A CN 102573226A
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Abstract
The invention provides a controller for a grid-connected generating wind solar complementary street lamp system, which can combine a wind solar complementary generating system and a mains supply power grid. First, the wind solar complementary generating system supplies power to a street lamp and feeds redundant electrical energy to the mains supply power grid. When wind solar electric energy production can not meet requirements of normal work of the street lamp, the mains supply power grid supplies power to the street lamp so that mains supply is saved, and normal work of the street lamp is guaranteed. A special storage battery is not required to be configured in the wind solar complementary generating system, and cost is reduced. The controller comprises a main control chip, a wind energy direct current (DC)/DC converter connected with a wind driven generator connected with the main control chip in bi-directional mode, a luminous energy DC/DC converter connected with a photovoltaic assembly, a load DC/DC converter connected with the street lamp and a reversible alternating current (AC)/DC converter connected with the mains supply power grid. The street lamp is respectively connected with the luminous energy DC/DC converter, the wind energy DC/DC converter and the reversible AC/DC converter respectively through the load DC/DC converter.
Description
Technical field
The present invention relates to wind and light complementary road lamp system controller technical field, particularly a kind of type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems.
Background technology
Public illumination road lamp systems such as existing city of China or rural area mostly adopt the utility grid power supply at present; Power consumption is bigger, all is under the energy starved situation in the world today, seeks new forms of energy; Solving the big problem of public lighting system power consumption, also is a job that is of great significance.The wind light mutual complementing power generation technology is as a kind of desirable cleaning new energy power supply technique; Become the important development direction of new forms of energy industry; Wind and solar hybrid generating system so that the wind light mutual complementing power generation technology is the basis mainly partly is made up of wind-driven generator, photovoltaic module, controller, storage battery and load etc.; Its operation principle is, utilizes the two-fold advantage of wind energy and solar energy, sends electric energy through wind-driven generator and photovoltaic module; Through battery stores electricity energy, through controller control to the charging of storage battery, discharge with to the output of load.If can wind and solar hybrid generating system be applied to adopt the street lamp illumination system of mains-supplied, can effectively solve the big problem of street lamp illumination system power consumption of mains-supplied, reach energy-saving and emission-reduction, the purpose of environmental protection.But in the wind and solar hybrid generating system of prior art; Generally to be equipped with storage battery dedicated as energy-storage travelling wave tube; Be used to store the unnecessary electric energy that wind-driven generator and photovoltaic module send; Increased the complexity of wind and solar hybrid generating system installation process, and because storage battery dedicated price is generally relatively more expensive, the cost that makes existing wind and solar hybrid generating system is than higher.
Summary of the invention
Deficiency according to the prior art existence; The present invention provides a kind of type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems; Can wind and solar hybrid generating system and utility grid be incorporated into the power networks; At first making full use of these two kinds of new forms of energy of scene is load (street lamp) power supply, and with unnecessary electric energy feed-in utility grid, when the energy output of wind and light complementary road lamp system can not satisfy the needs of load (street lamp) operate as normal; By utility grid load (street lamp) is supplied power, not only saved city's power consumption but also guaranteed the continuity and the stability of load (street lamp) work; And wind and solar hybrid generating system does not need the configure dedicated storage battery, has reduced cost.
Technical scheme of the present invention is:
A kind of type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems; It is characterized in that; Comprise the master control chip, connect the wind energy DC/DC converter of wind-driven generator, the luminous energy DC/DC converter that connects photovoltaic module, the load DC/DC converter that connects street lamp and the reversible AC/DC converter that can connect utility grid, said street lamp connects luminous energy DC/DC converter, wind energy DC/DC converter and reversible AC/DC converter respectively through load DC/DC converter; Said master control chip respectively with luminous energy DC/DC converter, wind energy DC/DC converter, load DC/DC converter and reversible two-way connection of AC/DC converter; Be used to control wind energy DC/DC converter, luminous energy DC/DC converter, load DC/DC converter, reversible AC/DC converter; The electric energy that at first wind-driven generator and photovoltaic module is sent is a street lamp power supply, road lamp power supply; And with unnecessary electric energy feed-in utility grid; When the electric energy that sends when wind-driven generator and photovoltaic module can not satisfy the street lamp operate as normal, be street lamp power supply, road lamp power supply through utility grid.
Said reversible AC/DC converter comprises a full-bridge AC-DC rectification/inverter circuit of being made up of 4 power switch pipes; Said full-bridge AC-DC rectification/inverter circuit connects a full-bridge high-frequency DC-DC conversion/rectification circuit of being made up of 4 power switch pipes; Said full-bridge high-frequency DC-DC conversion/rectification circuit connects the former limit of high frequency transformer, and the secondary of high frequency transformer connects a full-bridge high-frequency DC-DC rectification/translation circuit of being made up of 4 power switch pipes; The control of said power switch pipe extremely all is connected with the master control chip.
Said full-bridge AC-DC rectification/inverter circuit, full-bridge high-frequency DC-DC translation circuit adopt pulse width modulation control method.
Said interchange I/O end and direct current I/O end are connected with filter inductance and filter capacitor respectively.
Said power switch pipe is the high frequency power switching tube, and said high frequency power switching tube is MOSFET pipe, IGBT pipe or SiC pipe.
The luminous energy DC/DC converter of the wind energy DC/DC converter of said connection wind-driven generator, connection photovoltaic module is the control signal through the master control chip, realizes the DC/DC translation circuit of MPPT maximum power point tracking control.
Said controller also comprises the Interface and Communication unit, and said Interface and Communication unit is connected with the master control chip is two-way.
Said master control chip is a DSP chip.
Technique effect of the present invention:
A kind of type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems provided by the invention; Than the wind and light complementary road lamp system controller of prior art, increased the reversible AC/DC converter that can be connected with utility grid, wind and solar hybrid generating system is combined with utility grid; To wind energy, luminous energy, civil power Comprehensive Control; At first wind-driven generator and photovoltaic module electricity can be regulated and control, making full use of these two kinds of new forms of energy of scene is load (street lamp) power supply, when not working lamp or bright lamp, all electricity is removed outside the bright lamp needs; Unnecessary electric energy all directly is fed into utility grid; Be equivalent to a small-sized grid-connected power generation system, have only when the energy output of wind-driven generator and photovoltaic module can not satisfy the needs of load (street lamp) operate as normal, just switch to utility grid; Electricity with utility grid is supplied power to load (street lamp), has not only saved city's power consumption but also guaranteed the continuity and the stability of load (street lamp) work; And wind and solar hybrid generating system no longer needs the configure dedicated storage battery, has reduced cost; Time-of-use tariffs policy also capable of using simultaneously, during peak of power consumption, when the road lamp system power consumption was minimum just, wind and solar hybrid generating system can directly be fed into utility grid basically with electricity, has good economic benefits by day.Controller itself of the present invention in addition possesses stronger automation and intelligent controlled function, like modes such as light-operated, time control, Artificial Control; Particularly apply the present invention in the transformation of old illuminator, engineering construction is simple, and the improvement project amount is little.
The reversible AC/DC converter that the present invention increases; Realized the two-way changing of electric energy between utility grid and direct current output; When the AC-DC conversion, realized the PWM rectification at input, improve the grid side power factor; Through through interconnective high-frequency DC-DC translation circuit of high frequency commutator transformer and unidirectional rectification circuit, be transformed to the needed galvanic current of respective load and press again; When carrying out the DC-AC conversion; The DC-DC full bridge PWM translation circuit that direct-flow input end is made up of four high frequency power switching tubes; Direct current is transformed to the pulsating direct current signal of sine wave modulation,, gets into the unidirectional rectification circuit of DC-DC through the transmission of high frequency transformer; Pass through the DC-AC inverter circuit again, direct current energy is converted into and the alternating current feed-in electrical network of electrical network with the frequency homophase; Wherein adopted the high frequency power switching technique, thereby can make controller of the present invention finally reach the little lightweight effect of volume.And the present invention connects the wind energy DC/DC converter of wind-driven generator, the luminous energy DC/DC converter of connection photovoltaic module through the master control chip controls, has realized MPPT maximum power point tracking control, has improved the utilization ratio to new forms of energy.
Description of drawings
Fig. 1 is the structural representation of controller embodiment of the present invention.
Fig. 2 is the circuit topological structure sketch map of the reversible AC/DC converter of controller of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described further.
As shown in Figure 1; A kind of type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems; Comprise the master control chip, connect the wind energy DC/DC converter of wind-driven generator, the luminous energy DC/DC converter that connects photovoltaic module, the load DC/DC converter that connects street lamp and the reversible AC/DC converter that can connect utility grid, street lamp connects luminous energy DC/DC converter, wind energy DC/DC converter and reversible AC/DC converter respectively through load DC/DC converter; The master control chip respectively with luminous energy DC/DC converter, wind energy DC/DC converter, load DC/DC converter and reversible two-way connection of AC/DC converter; Be used to control wind energy DC/DC converter, luminous energy DC/DC converter, load DC/DC converter, reversible AC/DC converter; The electric energy that at first wind-driven generator and photovoltaic module is sent is a street lamp power supply, road lamp power supply, and with unnecessary electric energy feed-in utility grid, this moment, wind-driven generator was street lamp power supply, road lamp power supply with the electric energy one side that photovoltaic module sends through load DC/DC converter; Can pass through reversible AC/DC converter on the other hand; Carry out the DC-AC conversion, with unnecessary electric energy feed-in utility grid, the lamp work if street lamp does not work; Then the whole feed-in utility grid of wind-driven generator and photovoltaic module electricity ability are equivalent to a small-sized grid-connected power generation system; When the electric energy that sends when wind-driven generator and photovoltaic module can not satisfy the street lamp operate as normal, be street lamp power supply, road lamp power supply, also, carry out the AC-DC conversion, use the electric energy of utility grid to be street lamp power supply, road lamp power supply promptly through reversible AC/DC converter through utility grid; And the present invention can carry out light modulation through load DC/DC converter according to the needs of street lamp brightness, makes electric energy reach the optimum utilization state.Controller of the present invention also comprises the Interface and Communication unit, and the Interface and Communication unit also is connected with the master control chip is two-way, can realize transfer of data through computer, carries out integrated control & management.Connect the wind energy DC/DC converter of wind-driven generator, the luminous energy DC/DC converter of connection photovoltaic module in addition, all through the master control chip controls, realized MPPT maximum power point tracking control, to utilize wind energy and solar energy to greatest extent.
As shown in Figure 2, be the circuit topological structure sketch map of the reversible AC/DC converter of controller of the present invention.Comprise a full-bridge AC-DC rectification/inverter circuit of forming by power switch pipe Q1～Q4; Full-bridge AC-DC rectification/inverter circuit connects a full-bridge high-frequency DC-DC conversion/rectification circuit of being made up of power switch pipe Q5～Q8; Full-bridge high-frequency DC-DC conversion/rectification circuit connects the former limit of high frequency transformer B, and the secondary of high frequency transformer B connects a full-bridge high-frequency DC-DC rectification/translation circuit of being made up of power switch pipe Q9～Q12; The control of power switch pipe extremely all is connected with the master control chip; Be connected with filter inductance and filter capacitor respectively at interchange I/O end and direct current I/O end.When carrying out the conversion of AC-DC; The single-phase alternating current of input at first carries out filtering through filter capacitor C and filter inductance L, and the full-bridge AC-DC rectification circuit through being made up of power switch pipe Q1～Q4 adopts pwm pulse width modulated control mode again; The high-voltage direct current of output ripple; Full-bridge high-frequency DC-DC translation circuit through being made up of power switch pipe Q5～Q8 carries out the high-frequency DC-DC conversion again, and the pulsating direct current signal of output is converted into the dc voltage output circuit of primary side by the primary side of high frequency transformer; The dc voltage output circuit of primary side comprises the full-bridge high-frequency DC-DC rectification circuit of being made up of power switch pipe Q9～Q12; Carry out unidirectional rectification, press through filter inductance L0 and filter capacitor C0 filtering output galvanic current again, be electric; When carrying out the conversion of DC-AC, the direct voltage of input at first carries out filtering through filter capacitor C0 and filter inductance L0, again the full-bridge high-frequency DC-DC translation circuit through being made up of power switch pipe Q9～Q12; Adopt pwm pulse width modulated control mode; The pulsating direct current signal of sine wave output modulation, the full-bridge high-frequency DC-DC rectification circuit through being made up of power switch pipe Q5～Q8 carries out unidirectional rectification again; The full-bridge DC-AC inverter circuit of forming via power switch pipe Q1～Q4 at last; Adopt pulse width modulation control method, output AC electricity, feed-in utility grid.
Master control chip among the present invention is a DSP chip, and power switch pipe is the high frequency power switching tube, can be MOSFET pipe, IGBT pipe or SiC pipe; Realized the conversion of electric pressure through the HF switch technology, and the volume of controller is reduced greatly, weight alleviates greatly.
Claims (8)
1. type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems; It is characterized in that; Comprise the master control chip, connect the wind energy DC/DC converter of wind-driven generator, the luminous energy DC/DC converter that connects photovoltaic module, the load DC/DC converter that connects street lamp and the reversible AC/DC converter that can connect utility grid, said street lamp connects luminous energy DC/DC converter, wind energy DC/DC converter and reversible AC/DC converter respectively through load DC/DC converter; Said master control chip respectively with luminous energy DC/DC converter, wind energy DC/DC converter, load DC/DC converter and reversible two-way connection of AC/DC converter; Be used to control wind energy DC/DC converter, luminous energy DC/DC converter, load DC/DC converter, reversible AC/DC converter; The electric energy that at first wind-driven generator and photovoltaic module is sent is a street lamp power supply, road lamp power supply; And with unnecessary electric energy feed-in utility grid; When the electric energy that sends when wind-driven generator and photovoltaic module can not satisfy the street lamp operate as normal, be street lamp power supply, road lamp power supply through utility grid.
2. the type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems according to claim 1; It is characterized in that; Said reversible AC/DC converter comprises a full-bridge AC-DC rectification/inverter circuit of being made up of 4 power switch pipes; Said full-bridge AC-DC rectification/inverter circuit connects a full-bridge high-frequency DC-DC conversion/rectification circuit of being made up of 4 power switch pipes; Said full-bridge high-frequency DC-DC conversion/rectification circuit connects the former limit of high frequency transformer, and the secondary of high frequency transformer connects a full-bridge high-frequency DC-DC rectification/translation circuit of being made up of 4 power switch pipes; The control of said power switch pipe extremely all is connected with the master control chip.
3. the type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems according to claim 2 is characterized in that, said full-bridge AC-DC rectification/inverter circuit, full-bridge high-frequency DC-DC translation circuit adopt pulse width modulation control method.
4. the type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems according to claim 2 is characterized in that said interchange I/O end and direct current I/O end are connected with filter inductance and filter capacitor respectively.
5. the type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems according to claim 2 is characterized in that said power switch pipe is the high frequency power switching tube, and said high frequency power switching tube is MOSFET pipe, IGBT pipe or SiC pipe.
6. the type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems according to claim 1; The luminous energy DC/DC converter of the wind energy DC/DC converter of said connection wind-driven generator, connection photovoltaic module is the control signal through the master control chip, realizes the DC/DC translation circuit of MPPT maximum power point tracking control.
7. the type wind and light complementary road lamp system controller that generates electricity by way of merging two or more grid systems according to claim 1 is characterized in that said controller also comprises the Interface and Communication unit, and said Interface and Communication unit is connected with the master control chip is two-way.
8. according to the contrary integrated device of the described high frequency chain type of one of claim 1 to 7 wind light mutual complementing control, it is characterized in that said master control chip is a DSP chip.
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| CN104601030A (en) * | 2015-01-23 | 2015-05-06 | 苏州工业职业技术学院 | Photovoltaic hybrid full bridge inverter and wind and photovoltaic hybrid power |
| CN105319459A (en) * | 2014-06-11 | 2016-02-10 | 吴正明 | Working method of wind-solar complementary simulation experiment device |
| CN108112124A (en) * | 2017-12-26 | 2018-06-01 | 湖北工业大学 | Wind-solar hybrid intelligent LED street lamp monitoring system |
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Effective date of registration: 20210630 Address after: Room 1301-02, northwest of Bayi Bridge, Furong Middle Road, wangluyuan street, Kaifu District, Changsha City, Hunan Province 410005 Patentee after: Hunan Zhongnanshan Technology Development Co.,Ltd. Address before: 101511 room 508-28, Xitiangezhuang town government office building, No.8 Xitong Road, Miyun Economic Development Zone, Beijing Patentee before: Beijing Huayuan Hongsheng Energy Technology Co.,Ltd. Effective date of registration: 20210630 Address after: 101511 room 508-28, Xitiangezhuang town government office building, No.8 Xitong Road, Miyun Economic Development Zone, Beijing Patentee after: Beijing Huayuan Hongsheng Energy Technology Co.,Ltd. Address before: 410005 Golden Sail Building, No. 524, Furong Middle Road, Changsha City, Hunan Province, 13th Floor Patentee before: ZK ENERGY SCIENCE & TECHNOLOGY Co.,Ltd. |